GB1370951A - Process for the manufacture of a lactam - Google Patents

Process for the manufacture of a lactam

Info

Publication number
GB1370951A
GB1370951A GB10972A GB10972A GB1370951A GB 1370951 A GB1370951 A GB 1370951A GB 10972 A GB10972 A GB 10972A GB 10972 A GB10972 A GB 10972A GB 1370951 A GB1370951 A GB 1370951A
Authority
GB
United Kingdom
Prior art keywords
lactam
manufacture
rearrangement
sulphate
ammonium sulphate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB10972A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemiebau Dr A Zieren GmbH and KG
Original Assignee
Chemiebau Dr A Zieren GmbH and KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chemiebau Dr A Zieren GmbH and KG filed Critical Chemiebau Dr A Zieren GmbH and KG
Publication of GB1370951A publication Critical patent/GB1370951A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/16—Separation or purification
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds
    • C01B17/504—Preparation of sulfur dioxide by reduction of sulfur compounds of ammonium sulfates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/24—Sulfates of ammonium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Cephalosporin Compounds (AREA)

Abstract

1370951 Lactam manufacture CHEMIEBAU DR A ZIEREN GmbH & CO KG 3 Jan 1972 [18 June 1971] 109/72 Heading C2C Lactams are manufactured from cycloalkanone-oximes (which are preferably made by reaction of cycloalkalones with hydroxylamine sulphate followed by neutralization with ammonia) by rearrangement with sulphuric acid, the mixture is neutralized with ammonia, the lactam and ammonium sulphate are separated, and the ammonium sulphate formed in the rearrangement and/or in the oximation is then burnt, in a solid, finely divided form, at from 850‹ C. to 1,250‹ C. to form SO 2 which is reacted by contact oxidation at 400 to 600‹ C. and absorption to give sulphuric acid which is recycled to the rearrangement stage. In a preferred embodiment part of the SO 2 formed by combustion of the ammonium sulphate may be used in the manufacture of hydroxylamine sulphate. The preparation of #-caprolactam from cyclohexanone-oxime is described.
GB10972A 1971-06-18 1972-01-03 Process for the manufacture of a lactam Expired GB1370951A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712130037 DE2130037B2 (en) 1971-06-18 1971-06-18 METHOD FOR PRODUCING LACTAMEN

Publications (1)

Publication Number Publication Date
GB1370951A true GB1370951A (en) 1974-10-16

Family

ID=5810995

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10972A Expired GB1370951A (en) 1971-06-18 1972-01-03 Process for the manufacture of a lactam

Country Status (11)

Country Link
US (1) US4049646A (en)
JP (1) JPS5328440B1 (en)
AT (1) AT317906B (en)
BE (1) BE784560A (en)
CH (1) CH586206A5 (en)
DE (1) DE2130037B2 (en)
ES (1) ES403766A1 (en)
FR (1) FR2141795B1 (en)
GB (1) GB1370951A (en)
IT (1) IT959796B (en)
NL (1) NL7207712A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7607047A (en) * 1976-06-28 1977-12-30 Stamicarbon PROCEDURE FOR GENERATING EPSILON CAPROLACTAM FROM AN EPSILON CAPROLACTAM-SULFURIC ACID REACTION MIXTURE.
NL7700882A (en) * 1977-01-28 1978-08-01 Stamicarbon PROCEDURE FOR GENERATING EPSILON CAPROLAC TAM FROM AN EPSILON CAPROLACTAM SULFUR ACID REACTION MIXTURE.
US5498790A (en) * 1993-06-09 1996-03-12 Novus International, Inc. Regeneration of sulfuric acid from sulfate by-products of 2-hydroxy-4-(methylthio)butyric acid manufacture
US7022844B2 (en) 2002-09-21 2006-04-04 Honeywell International Inc. Amide-based compounds, production, recovery, purification and uses thereof
US11459263B2 (en) 2019-10-01 2022-10-04 Owens-Brockway Glass Container Inc. Selective chemical fining of small bubbles in glass

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133055A (en) * 1964-05-12 Production ofcaprolactam
US2221369A (en) * 1940-11-12 Process foe producing lactams
NL132894C (en) * 1961-08-30 1900-01-01
DE1199243B (en) * 1963-07-10 1965-08-26 Huels Chemische Werke Ag Process for the production of gases containing sulfur dioxide from waste sulfuric acid containing ammonium salts
NL136780C (en) * 1963-10-31
GB1084096A (en) * 1963-12-03 1900-01-01
DE1229995B (en) * 1964-01-17 1966-12-08 Chemiebau Dr A Zieren Ges Mit Process for the production of ammonia and sulfur dioxide
NL135679C (en) * 1968-11-12 1900-01-01
DE2110036C3 (en) * 1971-03-03 1975-10-02 Davy Powergas Gmbh, 5000 Koeln Process for splitting ammonium sulphate
NL164028C (en) * 1971-05-07 1980-11-17 Stamicarbon METHOD FOR SEPARATING LACTAMS
CA989830A (en) * 1971-05-07 1976-05-25 Abraham H. De Rooij Process for preparing and recovering lactams

Also Published As

Publication number Publication date
IT959796B (en) 1973-11-10
BE784560A (en) 1972-10-02
DE2130037B2 (en) 1977-02-10
ES403766A1 (en) 1975-05-16
DE2130037A1 (en) 1973-01-04
US4049646A (en) 1977-09-20
AT317906B (en) 1974-09-25
JPS5328440B1 (en) 1978-08-15
FR2141795B1 (en) 1977-12-23
CH586206A5 (en) 1977-03-31
FR2141795A1 (en) 1973-01-26
NL7207712A (en) 1972-12-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee